fossils november 17
DESCRIPTION
Genus Lingula Kingdom Animalia Phylum Brachiopoda Class Inarticulata Cretaceous (Mesozoic) “tailed mussel” Filter feeder Burrows in the sandTRANSCRIPT
Fossils November 17 Genus Lingula Kingdom Animalia Phylum
Brachiopoda Class Inarticulata
Cretaceous (Mesozoic) tailed mussel Filter feeder Burrows in the
sand Genus Atrypa Kingdom Animalia Phylum Brachiopoda Class
Articulata
Shells are round, egg shaped covered with many radial ridges
Silurian/Devonion (Paleozoic) Genus Composita Kingdom Animalia
Phylum Brachiopoda Class Articulata
Devonion to Permian (end of Paleozoic) Smooth shell Rounded folds
Genus Juresania Kingdom Animalia Phylum Brachiopoda Class
Articulata
Pennsylvanian to Permian (end of Paleozoic) Suspension feeder Fold
and sulcus (groove) Fine lines between Genus Leptaena Kingdom
Animalia Phylum Brachiopoda Class Articulata
Ordovician to Devonion (Paleozoic) Wrinkled ornamentation and fine
linear markings Genus Mucrospirifer Kingdom Animalia Phylum
Brachiopoda
Class Articulata winged brachiopods Butterfly shell Filter feeders
Devonion (Paleozoic) Genus Platystrophia Kingdom Animalia Phylum
Brachiopoda
Class Articulata Ordovician to Silurian (Paleozoic) Prominent
sulcus and fold Marine lime mud and sands lamp shells Genus
Rafinesquina Kingdom Animalia Phylum Brachiopoda
Class Articulata U-shaped and wide around the hinge Ordovician
(Paleozoic) Filter feeder Muddy sand or silt Order Rhynchonellida
Kingdom Animalia Phylum Brachiopoda
Class Articulata Strongly ribbed wedge-shaped or nut-like shells
Can extend their lophophore out for better feeding Ordovician
through Mesozoic Genus Exogyra Kingdom Animalia Phylum Mollusca
Class Bivalvia
Saltwater oysters Beak curved to one side Genus Gryphaea Kingdom
Animalia Phylum Mollusca Class Bivalvia
Devils toe nails Triassic to tertiary (mesozoic) Two articulated
valves-large shell and flattened smaller shell (lid) Genus Pecten
Kingdom Animalia Phylum Mollusca Class Bivalvia
Looks like a comb or rake Saltwater clams Cretaceous to quarternary
Found all over the world Genus Pholadomya Kingdom Animalia Phylum
Mollusca Class Bivalvia
Saltwater clams mesozoic Subclass Ammonoidea Kingdom Animalia
Phylum Mollusca Class Cephalopoda
Devonion to Cretaceous Excellent index fossils-specific species
found in rock layers Genus Baculites Kingdom Animalia Phylum
Mollusca Class Cephalopoda
Subclass Ammonoidea walking stick rock Cretaceous Genus
Dactylioceras Kingdom Animalia Phylum Mollusca Class
Cephalopoda
Subclass Ammonoidea Jurassic-good index fossil Shells branching
ribs that incline forward Died with dinosaurs Small in size Order
Belemnitida Kingdom Animalia Phylum Mollusca Class
Cephalopoda
Subclass Coleoidea Mesozoic Squid-like Hooks for catching prey
Genus Nautilus Kingdom Animalia Phylum Mollusca Class
Cephalopoda
Subclass Nautiloidea Eocene Genus Orthoceras Kingdom Animalia
Phylum Mollusca Class Cephalopoda
Subclass Nautiloidea Often in limestone Ordovician Grew to 15 cm
and ate small animals Look like baculites but existed before them
Genus Conus Kingdom Animalia Phylum Mollusca Class Gastropoda
Predatory sea snails or cone snails First appear in cretaceous
Genus Cypraea Kingdom Animalia Phylum Mollusca Class
Gastropoda
Sea snails Genus Platyceras Kingdom Animalia Phylum Mollusca Class
Gastropoda
Paleozoic sea snails Had a symbiotic relationship with crinoids
Genus Turrietella Kingdom Animalia Phylum Mollusca Class
Gastropoda
Tightly coiled shells Cretaceous to today Genus Worthenia Kingdom
Animalia Phylum Mollusca Class Gastropoda
Devonian to triassic Turban shaped shell Class Asteroidea Kingdom
Animalia Phylum Echinodermata
Starfish or sea stars Since ordovician predators Genus Pentremites
Kingdom Animalia Phylum Echinodermata
Class Blastoidea Carboniferous Related to sea lillies (crinoids)
Trapped food floating in current using tentacles Anchored to sea
floor Class Crinoidea Kingdom Animalia Phylum Echinodermata
Stems, columns, calyxes Date back to mid paleozoic Attach to sea
floor Class Echinoidea Kingdom Animalia Phylum Echinodermata
Sea urchins, sand dollars Mouth has 5 teeth arranged in circle
(Aristotles lantern) Since ordovician Class Ophiuroidea Kingdom
Animalia Phylum Echinodermata Brittle stars
5 arms Since ordovician Scavengers, detritus feeders and can prey
on small animals